1280742 has 16 divisors (see below), whose sum is σ = 2585520. Its totient is φ = 422912.

The previous prime is 1280737. The next prime is 1280743. The reversal of 1280742 is 2470821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267 + ... + 1622.

It is an arithmetic number, because the mean of its divisors is an integer number (161595).

2^1280742 is an apocalyptic number.

1280742 is an abundant number, since it is smaller than the sum of its proper divisors (1304778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1280742 is a wasteful number, since it uses less digits than its factorization.

1280742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2007.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 1280742 is about 1131.6987231591. The cubic root of 1280742 is about 108.5976807973.

The spelling of 1280742 in words is "one million, two hundred eighty thousand, seven hundred forty-two".